Comic Sue Perkins and food critic Giles Coren don period costumes and spend a week exploring the lifestyles and food of various periods in history. Guest chefs prepare the food from seven different eras, allowing Perkins and Coren to explore the food that shaped a nation, from wartime rations that included Spam and dried egg to stops in the Restoration, where they try sheep's head and leaping frog pie; the Regency period, where they dine on salmon poached in champagne; Victorian England, with its giant pies and copious amounts of alcohol; and the 1970s, where fondue was all the rage.